New Imaging and Display System for Wide Gamut Color Reproduction

Effect of enamel margin configuration on color change of resin composite restoration

“…This camera (RC500) is equipped with on three filters (S 1, S2, and S3) with spectral transmittance derived from the CIE color matching functions in XYZ color system 17,18) . In the computer, a set of S1, S2, and S3 digitized signal captured by CCD (active pixel of 4008(H) by 2672(V) and 43.3 mm diagonal (3:2 ratio) ) are treated as an image and converted to XYZ color information by a 3×3 color conversion matrix, which is derived from a set XYZ measured values of the reference color samples and their equivalent imager outputs with regard to the filter of the camera by multiple regression analysis 17,18) .…”

“…The color measurements of resin composite restorations in punched enamel cavities with three enamel margin configurations (non-bevel, 45-degree bevel and 45-degree reverse-bevel), prepared in bovine enamel disks, were performed using a digital camera (RC500), color gamut of which is fitted to CIE XYZ color gamut 17,18) . The null …”

Influence of enamel prism orientations on color shifting at the border of resin composite restorations

“…Recently, Aida et al evaluated the effect of enamel margin configuration on color shifting at the border of resin composite restorations using a digital camera (RC500), whose color gamut was fitted to the CIE XYZ color gamut by the three optical filters [15][16][17] . This camera can measure precisely and repetitively the color and evaluate sequentially the color on an arbitrarily selected line in image after acquiring the spectral information about the object [15][16][17] .…”

“…This camera can measure precisely and repetitively the color and evaluate sequentially the color on an arbitrarily selected line in image after acquiring the spectral information about the object [15][16][17] . Additionally, this camera incorporates an embedded color calibration system with a spectrophotometer mounted inside the optical system [15][16][17] . Therefore, the outputs of the camera are linearly transformed into device-independent XYZ tristimulus values [15][16][17] .…”

“…Additionally, this camera incorporates an embedded color calibration system with a spectrophotometer mounted inside the optical system [15][16][17] . Therefore, the outputs of the camera are linearly transformed into device-independent XYZ tristimulus values [15][16][17] . The authors demonstrated that enamel margin configuration affected color shifting of the resin composite in the cavity and improved color adjustment at the border of resin composite restorations 18) .…”